models.py: fix typo in Checksums, tablename should be checksums
models.py: fix typo in Checksums, tablename should be checksums

matthieucan/debsources,zacchiro/debsources,devoxel/debsources,vivekanand1101/debsources,oorestisime/debsources,matthieucan/debsources,nonas/debian-qa,Debian/debsources,zacchiro/debsources,vivekanand1101/debsources,Debian/debsources,matthieucan/debsources,clemux/debsources,clemux/debsources,zacchiro/debsources,nonas/debian-qa,matthieucan/debsources,clemux/debsources,clemux/debsources,oorestisime/debsources,sophiejjj/debsources,oorestisime/debsources,sophiejjj/debsources,clemux/debsources,devoxel/debsources,vivekanand1101/debsources,vivekanand1101/debsources,Debian/debsources,devoxel/debsources,nonas/debian-qa,nonas/debian-qa,Debian/debsources,Debian/debsources,zacchiro/debsources,sophiejjj/debsources,devoxel/debsources,zacchiro/debsources,sophiejjj/debsources,devoxel/debsources,oorestisime/debsources,oorestisime/debsources,vivekanand1101/debsources,sophiejjj/debsources,matthieucan/debsources